Base station apparatus of mobile communication system
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United States of America Patent
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Nov 2, 2010
Issued Date -
N/A
app pub date -
Sep 29, 2003
filing date -
Apr 17, 1997
priority date (Note) -
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Abstract
A base station including a transmitting and receiving amplifier for amplifying CDMA signals exchanged with a mobile station; a radio stage connected to the transmitting and receiving amplifier for carrying out D/A conversion of a transmitted signal that undergoes baseband spreading, followed by quadrature modulation, and for carrying out quasi-coherent detection of a received signal, followed by A/D conversion; a baseband signal processor connected with the radio stage for carrying out baseband signal processing of the transmitted signal and the received signal; a transmission interface connected with the baseband signal processor for implementing interface with external channels; and a base station controller for carrying out control such as management of radio channels and establishment and release of the radio channels. The base station communicates with the external channels by mapping logical channels into physical channels. The CDMA signals are spread using a short code and a long code.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- NTT DOCOMO, INC.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hagiwara, Junichiro | Kanagawa, JP | 49 | 886 |
Higashi, Akihiro | Kanagawa, JP | 41 | 1239 |
Kawakami, Hiroshi | Kanagawa, JP | 259 | 3364 |
Morikawa, Hiroki | Kanagawa, JP | 19 | 181 |
Nakamura, Takehiro | Kanagawa, JP | 282 | 3225 |
Nakano, Etsuhiro | Kanagawa, JP | 24 | 494 |
Nakano, Masatomo | Kanagawa, JP | 17 | 241 |
Ohno, Koji | Kanagawa, JP | 38 | 824 |
Onoe, Seizo | Kanagawa, JP | 60 | 945 |
Tamura, Motoshi | Kanagawa, JP | 77 | 1265 |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
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